Last Rites

The jiva assumes a subtle body after death of the physical body. This subtle form is known as preta. The preta is a transitory form that exists for a period of time in which the deceased maintains some connection with the world he has known. The bereaved family also maintains a connection with the deceased during that period. They do this through ceremonies associated with the cremation and the mourning period of thirteen days. The ceremonies provide a form to the sentiments that are both known and unknown. In this manner, the ceremonies help the process of separation for both the deceased and the family by reminding them that the earthly time for the departed is over and his connections with the world have come to an end. He needs to continue and move on in accordance with his karmas.

Ref: Hindu Antyeshti Samskar Book